參數(shù)資料
型號: MCIMX353DVM5B
廠商: Freescale Semiconductor
文件頁數(shù): 28/147頁
文件大?。?/td> 0K
描述: PROCESSOR MULTIMEDIA 400PBGA
標(biāo)準(zhǔn)包裝: 90
系列: i.MX35
核心處理器: ARM11
芯體尺寸: 32-位
速度: 532MHz
連通性: 1 線,CAN,EBI/EMI,以太網(wǎng),I²C,MMC,SPI,SSI,UART/USART,USB OTG
外圍設(shè)備: DMA,I²S,LCD,POR,PWM,WDT
輸入/輸出數(shù): 96
程序存儲器類型: ROMless
RAM 容量: 128K x 8
電壓 - 電源 (Vcc/Vdd): 1.33 V ~ 1.47 V
振蕩器型: 外部
工作溫度: -20°C ~ 70°C
封裝/外殼: 400-LFBGA
包裝: 托盤
i.MX35 Applications Processors for Industrial and Consumer Products, Rev. 10
Freescale Semiconductor
123
4.9.23.2.14
UART IrDA Mode Receiver
Figure 99 depicts the UART IrDA mode receive timing, with 8 data bit/1 stop bit format. Table 85 lists the
receive timing characteristics.
Figure 99. UART IrDA Mode Receive Timing Diagram
4.9.24
USB Electrical Specifications
In order to support four different serial interfaces, the USB serial transceiver can be configured to operate
in one of four modes:
DAT_SE0 bidirectional, 3-wire mode
DAT_SE0 unidirectional, 6-wire mode
VP_VM bidirectional, 4-wire mode
VP_VM unidirectional, 6-wire mode
Table 84. IrDA Mode Transmit Timing Parameters
ID
Parameter
Symbol
Min.
Max.
Units
UA3
Transmit bit time in IrDA mode
tTIRbit
1/Fbaud_rate
1
Tref_clk
2
1 F
baud_rate: Baud rate frequency. The maximum baud rate the UART can support is (ipg_perclk frequency)/16.
2 T
ref_clk: The period of UART reference clock ref_clk (ipg_perclk after RFDIV divider).
1/Fbaud_rate + Tref_clk
UA4
Transmit IR pulse duration
tTIRpulse
(3/16)
× (1/F
baud_rate)
– Tref_clk
(3/16)
× (1/F
baud_rate)
+ Tref_clk
Table 85. IrDA Mode Receive Timing Parameters
ID
Parameter
Symbol
Min.
Max.
Units
UA5
Receive bit time1 in IrDA mode
1
The UART receiver can tolerate 1/(16
× F
baud_rate) tolerance in each bit. But accumulation tolerance in one frame must not
exceed 3/(16
× F
baud_rate).
tRIRbit
1/Fbaud_rate
2
1/(16
× F
baud_rate)
2 F
baud_rate: Baud rate frequency. The maximum baud rate the UART can support is (ipg_perclk frequency) ÷ 16.
1/Fbaud_rate +
1/(16
× F
baud_rate)
UA6
Receive IR pulse duration
tRIRpulse
1.41 us
(5/16)
× (1/F
baud_rate)—
Bit 1
Bit 2
Bit 0
Bit 4
Bit 5
Bit 6
Bit 7
RXD
(input)
Bit 3
Start
Bit
STOP
BIT
Possible
Parity
Bit
UA5
UA6
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